5 Deutsche Mark 5 DEM 1981. Germany coin, Gotthold Ephraim Lessing | eBay
250th birthday of Gotthold Ephraim Lessing, 20 Mark coin 1979, GDR | 20 mark coins | GDR | Coins | Stamps Sieger
5 Deutsche Mark - Federal Republic of Germany – Numista
Německo 5 DM Lessing | Aukro
Novel Pyrogen Tests Based on the Human Fever Reaction: The Report and Recommendations of ECVAM Workshop 431,2 - Thomas Hartung, Ingeborg Aaberge, Susanne Berthold, Gunnar Carlin, Emmanuelle Charton, Sandra Coecke, Stefan Fennrich,